A relatively thin metallic item, having a concave or cupped contour, designed to effect its own seal by compression against the circumference of a hole. It is used as a blowout plug in boilers, engines, and the like to relieve the pressure created by the expansion of fluids caused by heat or freezing.
Classification: Parts for steam or other vapor generating boilers and super-heated water boilers, except heat exchangers
NSN 6650-01-327-3068
NSN 7035-01-458-3532
NSN 5925-01-357-4268
NSN 6105-01-181-6304
NSN 6650-01-566-1573
NSN 6685-00-055-5913
NSN 7035-00-205-1932
NSN 5985-01-003-8039
NSN 5965-01-649-6410
NSN 4140-01-487-3180
NSN 6150-00-257-2795
NSN 6240-00-287-1988